Become a Sudoku Champion A Gift for Sudoku Lovers and Sudoku Geniuses So, you think you've got the brain-power to tackle really medium-level difficulty sudoku puzzles? Do you consider yourself good in Sudoku. Well, try this extraordinary assortment of sudoku challenges and show off in front of your friends, teachers, relatives and family. Each of these medium sudoku puzzles is designed to stretch your mind to the max. And the level of difficulty increases as you move through the book, the answers for all sudoku puzzles are included at the back. This sudoku book is also ideal when you have lot of time during vacations and you want to do something productive and good for your brain.